SuperH-based fx calculators
fx legacy: Memory map

Physical memory map

Address Size (b) Description
0x80000000 4M Flash
0x88000000 256/512k RAM; depends on the model; see syscall 0xCCB
0xA0000000 4M uncached, same area as Flash at 0x80000000.
0xA0000300 4 calculator type info
0xA000FFB0 14 BIOS date
0xA000FFD0 8 calculator ID
0xA000FFFC 4 BIOS checksum (0x80000000-0x800002FF;0x80000340-0x8000FFBF or 0x80000000-0x8000FFBF with bootcode-timestamp below 2005.0623.1652)
0xA0010000   OS start
0xA0230000 64k MCS backup  (OS 1.XX)
0xA0240000 64k MCS backup  (OS 1.XX)
0xA024FFE0 14 OS date (OS 2.XX)
0xA024FFF8 4 OS checksum (OS 2.XX; 0xA0010000..0xA024FFF7)
0xA0250000 64k MCS backup  (OS 1.XX / OS 2.XX)
0xA0260000 64k MCS backup  (OS 2.XX)
     
     
0xA026FFE0 14 OS date (OS 1.XX)
0xA026FFF8 4 OS checksum (OS 1.XX; 0xA0010000..0xA022FFFF; 0xA0260000..0xA026FFF7)
     
     
     
0xB4000000 1 DisplayDriver register select bus
0xB4010000 1 DisplayDriver Data bus (DB)

 

fx-CG

(14.10.2012 12:07:32)